From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yann E. MORIN Date: Sun, 3 Sep 2017 11:53:50 +0200 Subject: [Buildroot] [PATCH 1/3] arch/mips: inverse the NaN logic In-Reply-To: References: Message-ID: <585dda9412d61d550fc9c6fa76a29e7e878ceec0.1504432422.git.yann.morin.1998@free.fr> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Currentlym the possibility to choose the NaN encoding is conditional to having a sufficiently recent gcc version. Which means that the architecture selection depends on the gcc version. But that's opposite to what we've always done in Buildroot: the software versions are conditional to the architecture options. There is nothing we can do about the hardware: it is there, we can't change it, while we can restrict ourselves to using software that is working on said hardware. Thus, we inverse the logic, to move the condition onto the software side: whenever NaN-2008 are selected, we restrict the toolchain selection to at least a gcc-4.9. But now, the option with the NaN type is always set, so we must enclose the code in gcc.mk inside a HAS_NAN_OPTION condition, as is already done for the external toolchain case. Signed-off-by: "Yann E. MORIN" Cc: Thomas Petazzoni Cc: Vicente Olivert Riera --- arch/Config.in.mips | 2 +- package/gcc/gcc.mk | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/Config.in.mips b/arch/Config.in.mips index c08b2a2968..13d1a477e6 100644 --- a/arch/Config.in.mips +++ b/arch/Config.in.mips @@ -176,10 +176,10 @@ config BR2_MIPS_NAN_LEGACY config BR2_MIPS_NAN_2008 bool + select BR2_ARCH_NEEDS_GCC_AT_LEAST_4_9 choice prompt "Target NaN" - depends on BR2_TOOLCHAIN_HAS_MNAN_OPTION depends on BR2_mips_32r5 || BR2_mips_64r5 default BR2_MIPS_ENABLE_NAN_2008 help diff --git a/package/gcc/gcc.mk b/package/gcc/gcc.mk index 49ccccf56f..d45b6d7a06 100644 --- a/package/gcc/gcc.mk +++ b/package/gcc/gcc.mk @@ -207,9 +207,11 @@ endif ifneq ($(call qstrip,$(BR2_GCC_TARGET_ABI)),) HOST_GCC_COMMON_CONF_OPTS += --with-abi=$(BR2_GCC_TARGET_ABI) endif +ifeq ($(BR2_TOOLCHAIN_HAS_MNAN_OPTION),y) ifneq ($(call qstrip,$(BR2_GCC_TARGET_NAN)),) HOST_GCC_COMMON_CONF_OPTS += --with-nan=$(BR2_GCC_TARGET_NAN) endif +endif ifneq ($(call qstrip,$(BR2_GCC_TARGET_FP32_MODE)),) HOST_GCC_COMMON_CONF_OPTS += --with-fp-32=$(BR2_GCC_TARGET_FP32_MODE) endif -- 2.11.0